Re: stream enum

[Dirk Zimoch <dirk.zimoch@psi.ch>]

Your conversion "\x02%*4s%c%*c%*c%*c%*c%*c%*c%*c%*c%*c%*s" lets me 
assume you want to read the character number 6 (after an initial 0x02 
and a 4 byte string) as a number. But %c gives not a number but a 
string. To read one char as a number use %1d and a longin record.
in "\x02%*4s%1d%*c%*c%*c%*c%*c%*c%*c%*c%*c%*s";

Be aware that %*4s reads less than 4 chars if it finds a space or tab! 
Maybe that is not what you want. Try %*4c instead:
in "\x02%*4c%1d%*c%*c%*c%*c%*c%*c%*c%*c%*c%*s";

Dirk

On 05.06.2017 15:28, l123173 wrote:
> Hi all,
>    I met some little question about stream.
>    After I sent command, I received a sequence of character through stream.
>    The pv type was stringin and the value of the pv was 1(string) or
> 0(string).
>    My question was that, I need the pv value was natural number( 0 or 1
> ), not string type.
>    I have tried to change the stringin to ai, some error came out. Then
> I think I could use the enum, but I could not know the usage though I tried.
>    Could someone give some help.
>
> Thanks,
> Li xing
>
> My db and proto file.
> ---------------------------------------------------------------
> record(stringin, "$(P)$(R)STAT")
> {
>     field(DESC, "test")
>     field(DTYP, "stream")
>     field(INP,  "@devplc2.proto STAT $(PORT) $(A)")
> }
>
> STAT{
>     out "\x0500FFBR2Y0000402F";
>      in "\x02%*4s%c%*c%*c%*c%*c%*c%*c%*c%*c%*c%*s";
> }